package com.hxm.demo.netty.http_demo;

import io.netty.buffer.ByteBuf;
import io.netty.buffer.Unpooled;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.SimpleChannelInboundHandler;
import io.netty.handler.codec.http.*;
import io.netty.util.CharsetUtil;

import java.net.URI;

public class TestHttpServerHandler extends SimpleChannelInboundHandler<HttpObject> {

    //读取客户端数据
    @Override
    protected void channelRead0(ChannelHandlerContext ctx, HttpObject msg) throws Exception {
        System.out.println("channel:" + ctx.channel() + ",pipiline:" + ctx.pipeline() + "通过pipeline获取channel:" + ctx.pipeline().channel());
        System.out.println("handler:" + ctx.handler());

        //判断msg是不是httprequest请求
        if (msg instanceof HttpRequest) {
            System.out.println("ctx类型=" + ctx.getClass());

            System.out.println("pipeline hashcode:" + ctx.pipeline().hashCode() + "TestHttpServerHandler:" + this.hashCode());

            System.out.println("msg 类型：" + msg.getClass());
            System.out.println("客户端地址：" + ctx.channel().remoteAddress());

            //获取到
            HttpRequest httpRequest = (HttpRequest) msg;
            //获取uri,过滤指定的资源
            URI uri = new URI(httpRequest.getUri());
            if ("favicon.ico".equals(uri.getPath())){
                System.out.println("请求了favicon.ico，不做响应");
                return;
            }

            ByteBuf content = Unpooled.copiedBuffer("hello,我是服务器", CharsetUtil.UTF_8);

            //构造一个http响应
            FullHttpResponse response = new DefaultFullHttpResponse(HttpVersion.HTTP_1_1, HttpResponseStatus.OK,content);

            response.headers().set(HttpHeaderNames.CONTENT_TYPE,"text/plain");
            response.headers().set(HttpHeaderNames.CONTENT_LENGTH,content.readableBytes());

            ctx.writeAndFlush(response);
        }
    }
}
